If you aren’t going to hire a writer, ask your employees or co-workers to contribute to the blog. This is a great way to get a lot of content up on your blog quickly while offering a variety of unique perspectives and ideas surrounding industry topics. You could rotate through the volunteers to coordinate with your schedule and assign each employee a date for their blog post.
Starting a blog is the easy part. You just need to have knowledge of your industry and the ability to write and you're halfway there.